Seat system for vision detection

Abstract

The invention provides a seat system for vision detection. The seat system comprises a base, a lifting mechanism, a chair body, a lifting control switch, a telescopic part, a light receiver, a guide rail and an infrared light transmitter, the lifting mechanism is connected with the base and the chair body, the lifting control switch controls the lifting mechanism, one end of the telescopic part is arranged on the chair body, the light receiver is arranged on the telescopic part and can move along with stretch and shrink of the telescopic part along the vertical direction, so that the light receiver and eyes of a vision detection person are positioned on the same horizontal line, the guide rail is arranged on one side of a standard visual acuity chart, and the infrared light transmitter can move along the guide rail, so that the infrared light transmitter and a detected sighting mark of the standard visual acuity chart are positioned on the same horizontal line. When the light receiver and the infrared light transmitter are positioned on the same horizontal line, the lifting mechanism stops operation, and the eyes of the vision detection person and the detected sighting mark are positioned on the same horizontal line, so that vision detection accuracy is improved.

Description

[0001] 【Technical field】 [0002] The invention relates to the technical field of medical devices, in particular to a seat system for vision detection. [0003] 【Background technique】 [0004] Vision testing requires that the standard straight-line distance between the eye and the target to be tested in the standard eye chart is 5 meters, which is difficult to meet clinically. When testing eyesight, especially those with poor eyesight, the head will move forward unconsciously during the test, directly shortening the distance between the eyes and the target to be tested; in addition, during the test, the eyes of the tester It cannot maintain the same level height as the detected visual mark of the standard eye chart, resulting in inaccurate test results. [0005] 【Content of invention】 [0006] In view of the above existing problems, it is necessary to provide a seat system capable of improving the accuracy of vision detection. [0007] In order to achieve the above object, t...

AI Technical Summary

Problems solved by technology

[0004] Vision testing requires that the standard linear distance between the eye and the target to be tested in the standard eye chart is 5 meters, which is difficult to meet clinically.

When testing eyesight, especially those with poor eyesight, the head will move forward unconsciously during the test, directly shortening the distance between the eyes and the target to be tested; in addition, during the test, the eyes of the tester It cannot be kept at the same level as the detected visual mark of the standard eye chart, resulting in inaccurate test results

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